well from what i read (and havnt done at all) people are saying a lot of differing things, but one that stands out, is PLDs ability to remove all or most dmg for short bursts, during peaks of high dmg.
(Aka, boss does too much dmg, go invincible, and have DPS quickly burn down the boss)

IF this is the case, then something comparable (maybe) would be to have a similar length cool down, that doesnt make the WAR invincible, but "almost".

I'd suggest a "Counter Heal".

Idealy healing back all damage taken. BUT the catch is, you need to survive each hit, in order to heal it back. (aka it cant 1 shot you.) Maybe every time you are healed, during this temp buff, you gain 1 stack of wrath.

(Again, this only applies if my assumption is correct. Which it probably isn't.)